How popular is Alberik?

Alberik is a rare given name for men. Alberik is also a unique surname for all people. (2000 U.S. Census)

Which version is better?

with its source form and related boy names. Aubrey(#1226 a year ago) is the only prominent related form of Alberik (not ranked) rated in the Top 2000. Other forms, like Alberic, are uncommon. This form of Alberik reached the peak of its popularity in the 1910s (#245) and has become significantly less common since (#1226, 83% less usage), with Aubrey becoming less trendy. (2015 U.S. SSA Records)